Job interview, but on Telegram?

Hello! So I applied a freelancing job on Upwork and a client sent me a message containing a pdf file that says I should send a message to Telegram. Long story short, he asked for details such as name, age, gender, country, and email address which can be found if you view my profile on Upwork. I look up his display picture and I think it was stolen online because the names do not match. I told him why he would ask such details and that I am a bit skeptical but he only replied that I should just fill it. Is this a scam? What would happen if I give out my details? Am I just being paranoid?